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NACA-TN-3500
Correction of additional span loadings computed by the Weissinger seven-point method for moderately tapered wings of high aspect ratio
Year: 1955
Abstract: It has been found that for wings combining high aspect ratio with large mounts of sweep, the Weissinger seven-point results are in error. A simple procedure is presented here which for a sizable range of plan . forms largely corrects these errors and results in more accurate span loadings being read directly from the loading charts of NACA Report 921. This procedure consists of an alteration of the taper ratio used plus an 4. additional correction applied at the wing root. In the above procedure, the lift-curve slope and the method of fairing the loading are also improved.
The new results agree within +1 percent with theoretical results believed to be accurate; whereas maximum errors of the original Weissinger seven-point loading (for wings swept back 45°) are approximately 2 and 8 percent for aspect ratios equal to 3 and 10, respectively.
The new results agree within +1 percent with theoretical results believed to be accurate; whereas maximum errors of the original Weissinger seven-point loading (for wings swept back 45°) are approximately 2 and 8 percent for aspect ratios equal to 3 and 10, respectively.
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| contributor author | NASA - National Aeronautics and Space Administration (NASA) | |
| date accessioned | 2017-09-04T15:37:39Z | |
| date available | 2017-09-04T15:37:39Z | |
| date copyright | 01/01/1955 | |
| date issued | 1955 | |
| identifier other | OVNUYDAAAAAAAAAA.pdf | |
| identifier uri | https://yse.yabesh.ir/std/handle/yse/39527 | |
| description abstract | It has been found that for wings combining high aspect ratio with large mounts of sweep, the Weissinger seven-point results are in error. A simple procedure is presented here which for a sizable range of plan . forms largely corrects these errors and results in more accurate span loadings being read directly from the loading charts of NACA Report 921. This procedure consists of an alteration of the taper ratio used plus an 4. additional correction applied at the wing root. In the above procedure, the lift-curve slope and the method of fairing the loading are also improved. The new results agree within +1 percent with theoretical results believed to be accurate; whereas maximum errors of the original Weissinger seven-point loading (for wings swept back 45°) are approximately 2 and 8 percent for aspect ratios equal to 3 and 10, respectively. | |
| language | English | |
| title | NACA-TN-3500 | num |
| title | Correction of additional span loadings computed by the Weissinger seven-point method for moderately tapered wings of high aspect ratio | en |
| type | standard | |
| page | 32 | |
| status | Active | |
| tree | NASA - National Aeronautics and Space Administration (NASA):;1955 | |
| contenttype | fulltext |